> On Thu, Apr 03, 2008 at 12:19:27PM +0200, Antoin Verschuren wrote:
>
> > http://seclists.org/bugtraq/2008/Jan/0270.html
> > that states that localhost entries in zones should be discouraged.
>
> if I follow this correctly, the risk is for "localhost.example.org" to enable
> anyone on the same host as the victim to "steal" cookies destined for
> "*.example.org". This reminds me of what Yngve has been pointing us at repea
> tedly
> and that is the cookie mechanism makes brave assumptions about the DNS.
>
> > I know that localhost entries were encouraged in RFC 1537 but that one
> > is obsolted by RFC 1912 which doesn't say anything anymore about
> > localhost entries, so no encouragement nor disencouragement.
>
> RFC 1912 is quiet about localhost entries in random forward zones, but
> different from RFC 1537 it recommends setting up a "localhost" TLD on ones
> local recursive name server. So, if memory serves, there were two schools
> of thought: one saying that forward and reverse should be immediately
> consistent and the other trying to rely upon the search path for
> resolution of the "localhost" token. Other alternatives include
> mapping this name by other means than the DNS, likely /etc/hosts on
> members of the Unix family.
>
> > I think that if localhost entries in zones should be discouraged, it
> > should come from the consensus of this WG.
>
> Independent of this, the "localhost" issue might need some attention because
> it is related to other work on our plate, namely mixed v4/v6 search path
> issues as well as topics discussed recently: the "localhost" TLD is special
> in the sense that it is actually reserved by RFC 2606 but neither delegated
> nor mapped to anything in real life. Back then there was some discussion
> about recommending an A RR for this name in the public DNS. At that time,
> not all root servers responded NXDOMAIN, either.
>
> -Peter
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Additionally "localhost" is the only hold over from single
label hostnames. Everything else got qualified, initially
by .ARPA then by other suffixes.
Mark
--
Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742 INTERNET: [EMAIL PROTECTED]
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